The focus for Combined Heat & Power 2 (CHP2) was to show the world that SOFC technology within a micro-CHP unit was indeed possible.  The engineering & fabrication experience with CHP1 allowed CFCL to further improve and refine the important Balance of Plant (BoP) technology.


A total of five demonstration CHP2 units were built, with four of these units were deployed in field trials located in Australia, New Zealand and Germany.  The remaining unit is located in CFCL's laboratory for testing and engineering development.  For more information on the field trials, please visit our News section and click on Field Trial Updates.

Design Highlights

  • The BoP was integrated even further resulting in a smaller size
  • Mass flow controllers were eliminated
  • A high-pressure fuel blower was not required
  • Nitrogen was no longer required during start-up and shut-down
  • The system was fully automated (turn-key) and could be remotely monitored and controlled
  • Features such as a hot water storage tank, back up batteries, standby inverters were also incorporated into the unit

Engineering Achievements

Dr Karl Föger with the CHP2 unit
  • System designed, built and commissioned within 10 months
  • Reduced size of system and BoP from CHP1
  • Stable pulse free steam generator operation
  • Automated control and external monitoring system proven
  • Operated system to the grid in first field trial
  • The system could be thermally cycled
  • European CE approval

Areas for Improvement

  • Reduce heat loss with even tighter integration & smaller heat exchanger
  • Eliminate need for external demineralised water system and gas desulphuriser
  • Reduce the number of system components and cost of components
  • Dramatically reduce system size
  • Reduce complexity of waste heat recovery system
  • Reduce quantity of batteries
  • Lower the overall parasitic power
  • Reduce overall cost significantly
CHP2 Assembly & Testing
Production of CHP2 units undergoing testing

The thousands of hours of field-testing further validated the design improvements and also introduced valuable customer feedback on the future requirements of a SOFC powered CHP system.  The next evolution became the latest product: